2-1 CIA REVIEW

Science 8

We are learning to: identify different forms of energy We are looking for: identification of the following:

Chemical – energy stored in the bonds of atomsElectrical – energy in moving electronsMechanical – energy in motionThermal – heat energyAcoustic – sound energyNuclear – energy stored in the nucleus of an atomElectromagnetic – visible(radiant), UV rays, microwaves, etc.

• We are learning to: describe how an object can have potential and/or kinetic energy

• We are looking for: kinetic energy (the energy of an object because of its motion) and potential energy (the energy stored by an object because of its location).

• We are learning to: explain the changing relationship between potential and kinetic energy of an object at rest or in motion

• We are looking for: As height increases, potential energy increases. As velocity increases, kinetic energy increases

What type of energy is present in a battery?

A. B. C. D. E.

0% 0% 0%0%0%

A. Chemical EnergyB. Nuclear EnergyC. Mechanical EnergyD. Solar EnergyE. I need help. I don’t

understand.

What type of energy is required to operate this device?

A. B. C. D. E.

0% 0% 0%0%0%

A. Electrical energyB. Chemical EnergyC. Mechanical EnergyD. Acoustic EnergyE. Help!

What is the type of energy present in the sun?

Electr

ical

Kinetic

Chemical

Nucle

ar

I don’t

know. ..

.

0 0 000

A. ElectricalB. KineticC. ChemicalD. NuclearE. I don’t know. I need

help.

What type of energy is dependent on the height of an object?

Chemical p

oten...

Elasti

c potent..

.

Grav

itational ..

.

Kinetic

I don’t

know. ..

.

0 0 000

A. Chemical potentialB. Elastic potentialC. Gravitational

potentialD. KineticE. I don’t know. I need

help.

We are learning to: explain the law of conservation of energy.

We are looking for: how energy can change from one form to another without the loss of overall energy

We are learning to: trace energy transformations in a closed system (i.e., flashlight)

We are looking for: the ordering of how one form of energy changes (transforms) to another. (See aforementioned types of energy)

At what point does the swinging pendulum have the most kinetic energy?

A. B. C. D. E.

0 0 000

A. AB. BC. CD. DE. I don’t

understand. I need help!

At what point would the swinging pendulum have the most potential energy?

A. B. C. D. E.

0 0 000

A. AB. BC. CD. DE. I don’t

understand. I need help!

In the simulation, what is the relationship between potential and kinetic energy?

A. B. C. D. E.

0 0 000

A. There is no relationship.B. As PE increases, KE increases.C. As PE increases, KE decreases.D. As PE decreases, KE decreases.E. I don’t understand. I need help!

http://phet.colorado.edu/sims/pendulum-lab/pendulum-lab_en.html

Electricity is produced in a hydroelectric plant when moving water turns a turbine.

Which describes this energy transformation from the turning turbine to electricity?

1 2 3 4 5

0 0 000

a. mechanical energy into electric energyb. nuclear energy into electric energyc. thermal energy into electric energyd. chemical energy into electric energye. Help! I don’t understand.

Joe Shmoe turns on a flashlight. Which of the following lists the energy transformations in the system?

A. B. C. D. E.

0 0 000

A. Electrical chemical mechanical radiant

B. Chemical electrical thermal mechanical

C. Nuclear chemical electricalD. Mechanical chemical Electrical

radiantE. I don’t understand. I need help!

We are learning to: demonstrate how waves transfer energy.

We are looking for: a disturbance or variation that

transfers energy from one point to another point in a medium.

Transverse waves- wave and medium move in direction that is perpendicular to each other

Longitudinal waves- wave and medium move in same direction

A transverse wave…..

A. B. C. D. E.

0 0 000

A. Vibrates particles perpendicular to the direction of wave

B. Vibrates particles parallel to the direction of the wave

C. Vibrates both parallel and perpendicular to the direction of the wave

D. Vibrates particles in one directionE. Help! I don’t understand.

What type of wave is represented by

picture?

A. B. C. D. E.

0 0 000

A. TransverseB. LongitudinalC. SurfaceD. Seismic E. Help! I don’t

understand.

A wave is a disturbance that transfers

A. B. C. D. E.

0 0 000

A. matter.B. particles.C. energy.D. a medium.E. Help! I don’t

understand.

What do you call the material that a wave travels through?

A. B. C. D. E.

0 0 000

A. PlasmaB. SpaceC. VacuumD. MediumE. Help! I don’t

understand.

What type of wave is

represented by the animation?

A. B. C. D. E.

0 0 000

A. LongitudinalB. TransverseC. SurfaceD. SeismicE. Help! I don’t

understand.